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egs/aurora4/s5/local/nnet2/run_5b.sh
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#!/bin/bash
stage=0
train_stage=-100
# This trains only unadapted (just cepstral mean normalized) features,
# and uses various combinations of VTLN warping factor and time-warping
# factor to artificially expand the amount of data.
. ./cmd.sh
. utils/parse_options.sh # to parse the --stage option, if given
[ $# != 0 ] && echo "Usage: local/run_4b.sh [--stage <stage> --train-stage <train-stage>]" && exit 1;
set -e
if [ $stage -le 0 ]; then
# Create the training data.
featdir=`pwd`/mfcc/nnet5b; mkdir -p $featdir
fbank_conf=conf/fbank_40.conf
echo "--num-mel-bins=40" > $fbank_conf
steps/nnet2/get_perturbed_feats.sh --cmd "$train_cmd" \
$fbank_conf $featdir exp/perturbed_fbanks_si284 data/train_si284 data/train_si284_perturbed_fbank &
steps/nnet2/get_perturbed_feats.sh --cmd "$train_cmd" --feature-type mfcc \
conf/mfcc.conf $featdir exp/perturbed_mfcc_si284 data/train_si284 data/train_si284_perturbed_mfcc &
wait
fi
if [ $stage -le 1 ]; then
steps/align_fmllr.sh --nj 30 --cmd "$train_cmd" \
data/train_si284_perturbed_mfcc data/lang exp/tri4b exp/tri4b_ali_si284_perturbed_mfcc
fi
if [ $stage -le 2 ]; then
steps/nnet2/train_block.sh --stage "$train_stage" \
--cleanup false \
--initial-learning-rate 0.01 --final-learning-rate 0.001 \
--num-epochs 10 --num-epochs-extra 5 \
--cmd "$decode_cmd" \
--hidden-layer-dim 1536 \
--num-block-layers 3 --num-normal-layers 3 \
data/train_si284_perturbed_fbank data/lang exp/tri4b_ali_si284_perturbed_mfcc exp/nnet5b || exit 1
fi
if [ $stage -le 3 ]; then # create testing fbank data.
featdir=`pwd`/mfcc
fbank_conf=conf/fbank_40.conf
for x in test_eval92 test_eval93 test_dev93; do
mkdir -p data/${x}_fbank
cp data/$x/* data/${x}_fbank || true
steps/make_fbank.sh --fbank-config "$fbank_conf" --nj 8 \
--cmd "$train_cmd" data/${x}_fbank exp/make_fbank/$x $featdir || exit 1;
steps/compute_cmvn_stats.sh data/${x}_fbank exp/make_fbank/$x $featdir || exit 1;
done
fi
if [ $stage -le 4 ]; then
steps/nnet2/decode.sh --cmd "$decode_cmd" --nj 10 \
exp/tri4b/graph_bd_tgpr data/test_dev93_fbank exp/nnet5b/decode_bd_tgpr_dev93
steps/nnet2/decode.sh --cmd "$decode_cmd" --nj 8 \
exp/tri4b/graph_bd_tgpr data/test_eval92_fbank exp/nnet5b/decode_bd_tgpr_eval92
fi
exit 0;
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